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How to Clean a Range Hood Filter

Home/Resources/Cleaning & Laundry/Cleaning a Range Hood Filter
DH
Written & researched by Derek Holt Home & Appliances Editor
Updated August 2026
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Cleaning a range hood filter is an easy DIY job of about 15 minutes of active work plus a soak, costing only dish soap and baking soda. No permit or pro is involved. The metal mesh filter above your cooktop traps grease, and when it clogs it stops working and becomes a fire hazard over the burners. The task is simple: pop the filter out, soak it in hot degreasing water, scrub and dry. The key detail is keeping the water genuinely hot, since heat is what dissolves the grease.

How to Clean a Greasy Range Hood Filter — Clean With Confidence

Step-by-step: the hot degreasing soak

  1. Remove the filter. Slide or unclip the metal mesh filter from the underside of the hood. Most release with a small spring latch or tab.
  2. Identify the filter type. Confirm it is a washable metal mesh filter. If there is a separate charcoal filter, set it aside to replace, not wash.
  3. Prepare a hot soak. Fill a sink or large pot with boiling or very hot water, add grease-cutting dish soap and about a quarter cup of baking soda.
  4. Submerge and soak. Fully submerge the filter and let it soak 10 to 30 minutes so the heat and alkaline mix dissolve the baked-on grease.
  5. Scrub gently. Work both sides with a soft brush or non-abrasive pad, reaching into the mesh. Avoid wire brushes that flatten the mesh.
  6. Repeat if needed. For heavy buildup, refresh the hot water and soak again, or add a degreaser.
  7. Rinse and dry. Rinse thoroughly under hot water and let the filter dry completely before reinstalling, so no water drips into the hood.
  8. Reinstall. Slide the dry filter back into the hood and confirm it latches securely.
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Tools and materials

You need grease-cutting dish soap, baking soda, a soft brush and a large sink or pot. The range hood is one greasy zone of a kitchen you clean as a whole, so pair this with the oven below it and the counters and cabinet fronts around it, handled by our all-purpose cleaner picks. For the final wipe-down of the hood body and stainless surfaces, and the floor beneath, tools from our steam mop roundup finish the job.

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Mistakes that leave grease or damage the filter

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Safety notes

This is DIY and low-risk, with one important reason to stay on schedule: a grease-saturated filter above a hot cooktop is a recognized grease-fire hazard, so cleaning it regularly is a genuine safety measure, not just cosmetics. Use hot water carefully to avoid scalds, and ventilate if you use a chemical degreaser. There is no code or permit involved. If the hood fan itself is not pulling air even with a clean filter, that points to a ducting or motor issue rather than the filter.

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More from this hub: Cleaning & Laundry · Clean an oven · Clean stainless steel appliances · Clean a dryer vent · Best all-purpose cleaners · How we rank

Straight Answers

Frequently Asked

How do you clean a greasy range hood filter?

The most effective method is a hot degreasing soak. Fill a sink or large pot with boiling or very hot water, add a good squirt of grease-cutting dish soap and about a quarter cup of baking soda, and submerge the metal mesh filter for 10 to 30 minutes so the heat and alkaline soak dissolve the baked-on grease. Then scrub gently with a soft brush, rinse, and dry fully before reinstalling. For very heavy buildup, repeat the soak or add degreaser. The heat is what does the work, so keep the water hot.

How often should you clean a range hood filter?

Clean the metal mesh filter every one to three months, and monthly if you cook often or fry a lot, since grease accumulates fast and a saturated filter stops trapping it. A filter you can no longer see light through, or one that feels sticky and heavy, is overdue. Charcoal or carbon filters in ductless recirculating hoods are different, they cannot be washed and must be replaced every few months per the manufacturer. Regular cleaning keeps the fan pulling properly and removes the grease that makes a clogged filter a fire risk.

Can you put a range hood filter in the dishwasher?

You can put many aluminum and stainless mesh filters in the dishwasher, running them alone on a hot cycle, and it works for light-to-moderate grease. But two cautions: dishwasher detergent can dull or discolor aluminum filters over time, turning them chalky, and a heavily greased filter can leave residue in the dishwasher. For that reason many people prefer the hot soak method, which is gentler on the finish and more thorough on heavy grease. Check whether your filter is dishwasher-safe, and never wash a charcoal filter, which must be replaced.

Why is it important to clean a range hood filter?

A grease-clogged filter is both a performance and a safety problem. Clogged with grease, the filter can no longer trap new grease or let the fan pull air, so cooking smoke, odors and grease-laden air stay in the kitchen and coat your cabinets. More seriously, accumulated grease is flammable, and a saturated filter sitting above a hot cooktop is a recognized grease-fire risk. Cleaning it restores ventilation, keeps your kitchen surfaces cleaner, and removes the fuel that makes a neglected hood dangerous over a burner.

What kind of range hood filters can and cannot be washed?

Metal mesh filters, the shiny aluminum or stainless panels, are reusable and designed to be washed repeatedly. Charcoal or carbon filters, used in ductless recirculating hoods to absorb odors, are not washable and lose their effectiveness once saturated, so they must be replaced every three to six months per the manufacturer. Many hoods have both: a washable metal grease filter plus a replaceable charcoal filter behind it. Check your hood, wash the metal one, and replace the carbon one on schedule rather than trying to clean it.